473
FZUS51 KBOX 220505
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
105 AM EDT SAT AUG 22 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-221800-
105 AM EDT SAT AUG 22 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
WEAK LOW PRES LINGERS SE OF THE CAPE AND NANTUCKET THROUGH SAT ALONG
A STALLED FRONT. HIGH PRES PUSHES THIS FRONT FARTHER OFFSHORE
SOMETIME MON INTO MON NIGHT. THIS HIGH PRES SHOULD REMAIN OVER THE
WATERS THROUGH WED.
ANZ250-221800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 2 FT AT
5 SECONDS. A CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT AT 5 SECONDS AND E 2 FT AT
8 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 4 SECONDS AND N 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING.
SUN NIGHT THROUGH MON NIGHT
W WINDS 5 TO 10 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND
SW 1 FOOT AT 3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SE 2 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-221800-
MASSACHUSETTS BAY AND IPSWICH BAY-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND SE 2 FT AT 5 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS. A
CHANCE OF SHOWERS.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS.
SUN
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 6 SECONDS AND N 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING.
SUN NIGHT THROUGH MON NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SE 1 FOOT AT
12 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
WAVE DETAIL: E 2 FT AT 7 SECONDS AND W 1 FOOT AT 2 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-221800-
CAPE COD BAY-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 1 FOOT
AT 5 SECONDS. A CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND NE 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
N WINDS AROUND 5 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
E WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND NE 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
SUN NIGHT THROUGH MON NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND
S 1 FOOT AT 2 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO
20 KT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 6 SECONDS AND W
1 FOOT AT 2 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-221800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS. A CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NE 3 FT
AT 4 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE
MORNING.
SAT NIGHT
W WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND NW 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 6 SECONDS AND N 1 FOOT AT 4 SECONDS. SHOWERS LIKELY IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON. PATCHY FOG IN THE
MORNING.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-221800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 6 SECONDS AND S 2 FT AT 5 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 4 SECONDS AND S 2 FT AT 5 SECONDS.
SAT NIGHT
W WINDS AROUND 5 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND NW 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 5 SECONDS AND N 1 FOOT AT 5 SECONDS. SHOWERS LIKELY IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON. PATCHY FOG IN THE
MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE
4 FT AT 6 SECONDS AND NW 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND SW 3 FT AT 3 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-221800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 15 TO 20 KT. SEAS AROUND 3 FT. WAVE
DETAIL: N 3 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SUN
SE WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND SE 2 FT AT
12 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
SUN NIGHT AND MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SW 3 FT AT
5 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W
2 FT AT 5 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-221800-
NANTUCKET SOUND-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 4 SECONDS AND N 2 FT AT 7 SECONDS. A CHANCE OF
SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS.
SAT NIGHT
NW WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND N 1 FOOT
AT 2 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT WITH
VSBY 1 TO 3 NM.
SUN
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 4 SECONDS AND N 1 FOOT AT
5 SECONDS. SHOWERS LIKELY IN THE MORNING. A CHANCE OF SHOWERS IN
THE AFTERNOON. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT THROUGH MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND W
2 FT AT 3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND W
2 FT AT 3 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-221800-
VINEYARD SOUND-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND N 2 FT AT
4 SECONDS. A SLIGHT CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 5 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 4 SECONDS AND N 1 FOOT AT
5 SECONDS. SHOWERS LIKELY IN THE MORNING. A CHANCE OF SHOWERS IN
THE AFTERNOON. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT THROUGH MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E
1 FOOT AT 5 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 3 SECONDS AND SW
3 FT AT 5 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-221800-
BUZZARDS BAY-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT
AT 6 SECONDS. A CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS, BECOMING N 1 FOOT AT 4 SECONDS AND S 1 FOOT
AT 5 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SAT NIGHT
N WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 5 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG AFTER MIDNIGHT.
SUN
E WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS. SHOWERS LIKELY IN THE MORNING. A CHANCE OF SHOWERS IN
THE AFTERNOON. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT THROUGH MON NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E
1 FOOT AT 4 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SW 2 FT AT
4 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-221800-
RHODE ISLAND SOUND-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 4 SECONDS AND N 2 FT AT 4 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF
SHOWERS. PATCHY FOG AFTER MIDNIGHT.
SUN
E WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING.
SUN NIGHT AND MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W 2 FT AT
3 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W
1 FOOT AT 4 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-221800-
BLOCK ISLAND SOUND-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND S 1 FOOT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF
SHOWERS. PATCHY FOG AFTER MIDNIGHT.
SUN
E WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND N 1 FOOT AT
4 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING. PATCHY FOG IN
THE MORNING.
SUN NIGHT AND MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SW 1 FOOT
AT 2 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-221800-
BOSTON HARBOR-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A
SLIGHT CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT NIGHT
N WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS. PATCHY FOG. A CHANCE OF SHOWERS.
SUN
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF
SHOWERS. PATCHY FOG IN THE MORNING.
SUN NIGHT THROUGH MON NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND
2 FT.
TUE THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-221800-
NARRAGANSETT BAY-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. WAVES AROUND 2 FT. A
SLIGHT CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
NE WINDS AROUND 5 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS. PATCHY FOG AFTER MIDNIGHT.
SUN
E WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING.
SUN NIGHT THROUGH MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES 2 TO 3 FT.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-221800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS. A CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 3 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
A CHANCE OF SHOWERS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS
AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE
MORNING. VSBY 1 TO 3 NM.
SUN NIGHT THROUGH MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W
2 FT AT 3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W
2 FT AT 3 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-221800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND SW 2 FT AT
6 SECONDS. A CHANCE OF SHOWERS.
SAT
NE WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND SW 2 FT AT 6 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
NE 2 FT AT 4 SECONDS AND S 2 FT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND N 1 FOOT AT
4 SECONDS. SHOWERS IN THE MORNING. A CHANCE OF SHOWERS IN THE
AFTERNOON. PATCHY FOG IN THE MORNING. VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS. A CHANCE OF
SHOWERS.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 4 TO 6 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-221800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND NE 2 FT AT 7 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT, BECOMING NW IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND SW 2 FT AT
5 SECONDS.
SAT NIGHT
SW WINDS AROUND 5 KT, BECOMING S AFTER MIDNIGHT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND N 2 FT AT
5 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG AFTER MIDNIGHT WITH
VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 2 FT AT 12 SECONDS.
SHOWERS IN THE MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS.
MON
SW WINDS 5 TO 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL: SE 5 FT
AT 7 SECONDS AND W 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
MORNING.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS 4 TO 6 FT.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-221800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
105 AM EDT SAT AUG 22 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND S 2 FT AT
5 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
NE 2 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF
SHOWERS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SUN
S WINDS AROUND 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND NE 1 FOOT AT 5 SECONDS. SHOWERS IN THE MORNING.
A CHANCE OF SHOWERS IN THE AFTERNOON. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL:
E 5 FT AT 8 SECONDS AND S 4 FT AT 6 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
MON AND MON NIGHT
W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE
DETAIL: S 4 FT AT 7 SECONDS AND W 3 FT AT 5 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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